Experimental Study on the Enhanced Thermal Performance of Two-Phase Closed Thermosyphon Using Mechanical and Chemical Treated MWCNTs Nanofluids

Baek, Seungyeop; Lee, Ajeong; Lee, Seunghyeon; Park, Yong‐Ho; Kim, Junhyo; Sung, Youl-Moon; Noh, Jungpil; Huh, Sun-Chul; Choi, Byeong-Keun; Jeong, Hyomin

doi:10.1007/s12217-021-09872-w

Cited by 4 publications

(1 citation statement)

References 31 publications

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“…In this study, the thermal absorption performance increased with increasing nanofluid concentration. As discussed in previous studies [43][44][45][46], we can achieve much better results if we improve the dispersibility and stability of nanoparticles. Therefore, further studies on the preparation and application of highly dispersed nanofluids are required to obtain better thermal absorption performance.…”

Section: Effects Of Materials Types and Particle Concentrations Of Na...mentioning

confidence: 81%

Thermal Absorption Performance Evaluation of Water-Based Nanofluids (CNTs, Cu, and Al2O3) for Solar Thermal Harvesting

2021

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For solar thermal harvesting, an experimental study was performed on the thermal absorption performance of water-based carbon nanotubes (CNTs), Cu, and Al2O3 nanofluids using a halogen lamp-based thermal radiation system. The effect of nanoparticle concentrations (0.01 wt.%, 0.1 wt.%, and 1 wt.%) on the nanofluid dispersion, stability, and thermal absorption characteristics was investigated, and a comparative analysis was performed for each type of nanofluid. All types of nanofluids increased the absorbance and electrical conductivity with increasing nanoparticle concentration, which contributed to improving the thermal absorption performance of nanofluids. The results showed that the thermal absorption performance was high in the order of carbon-based nanofluids (CNTs), metal-based nanofluids (Cu), and oxide-based nanofluids (Al2O3). In CNTs nanofluids, the thermal absorption performance expressed the time reduction rate, which was 12.8%, 16.3%, and 16.4% at 0.01 wt.%, 0.1 wt.%, and 1 wt.% test cases, respectively. Therefore, the 0.1 wt.%-CNTs nanofluid is more economical and appropriate. However, in Al2O3 nanofluids, the time reduction rate of the 1 wt.% nanofluid was significantly higher than that of the 0.01 wt.% and 0.1 wt.% nanofluids. In Cu nanofluids, unlike CNTs and Al2O3 nanofluids, the time reduction rate constantly increased as the nanoparticle concentration increased.

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Section: Effects Of Materials Types and Particle Concentrations Of Na...mentioning

confidence: 81%

Thermal Absorption Performance Evaluation of Water-Based Nanofluids (CNTs, Cu, and Al2O3) for Solar Thermal Harvesting

2021

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Stability, surface tension, and thermal conductivity of Al2O3/water nanofluids according to different types of alcohol and their proportion

Kim

Baek

Choi

et al. 2021

Case Studies in Thermal Engineering

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Influence of surfactants on thermal performance of Al2O3/water nanofluids in a two-phase closed thermosyphon

Baek

Shin

Noh

et al. 2021

Case Studies in Thermal Engineering

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Experimental Study on the Enhanced Thermal Performance of Two-Phase Closed Thermosyphon Using Mechanical and Chemical Treated MWCNTs Nanofluids

Cited by 4 publications

References 31 publications

Thermal Absorption Performance Evaluation of Water-Based Nanofluids (CNTs, Cu, and Al2O3) for Solar Thermal Harvesting

Thermal Absorption Performance Evaluation of Water-Based Nanofluids (CNTs, Cu, and Al2O3) for Solar Thermal Harvesting

Stability, surface tension, and thermal conductivity of Al2O3/water nanofluids according to different types of alcohol and their proportion

Influence of surfactants on thermal performance of Al2O3/water nanofluids in a two-phase closed thermosyphon

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